The choice of language is altogether different.
语言的选择全然不同。
China is utterly different.
中国完全不一样。
The languages are structurally different.
这些语言存在结构上的.区别。
They come from totally different cultures.
他们来自完全不同的文化。
This is quite a different problem.
这是个截然不同的问题。